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Explain RS232C Standard.
RS232C:
1. Standard described for asynchronous communications where there is given timing among data bits and no fixed timing among the characters which the bits form.
2. This standard described 25 signal lines and 50ft is the maximum guaranteed distance
3. This standard explains a ser system with only a single wire all direction.
4. Signal levels are: from -25 to -3 and from +3 to +25V.
Explain Open Loop Control Systems In an open-loop control system, the controller independently computes exact voltage or current required by the actuator to do the job and send
Q. A 230-V, single-phase, 60-Hz source supplies two loads in parallel. One draws 10 kVA at a lagging power factor of 0.80 and the other draws 6 kWat a lagging power factor of 0.90.
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Explain effect of frequency of applied electric field. If an external electric field is applied, the distance among charges that is related to chemical bonding keeps constant i
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Alow-noise transducer is connected to an instrumentation system by a cable that generates thermal noise at room temperature. The information-bearing signal has a bandwidth of 6 kHz
Q. In an AM transmitter that transmits a total power of 1 kW, the unmodulated carrier power is 850 W. Compute the required value of (S i /N i )AM at a receiver, if (S 0 /N 0 )AM
Q. Consider two 1-C charges separated by 1min free space. Show that the force exerted on each is about one million tons.
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